Provided is a pixel. The pixel includes a substrate, a first electrode disposed on the substrate, a partition wall insulation layer disposed on the substrate to cover a first portion of the first electrode, a second electrode disposed on the partition wall insulation layer and including a second portion overlapping the first portion, and a light emitting element disposed on a first side surface of the partition wall insulation layer between the first portion and the second portion and connected to the first electrode and the second electrode.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A pixel comprising: a substrate; a first electrode disposed on the substrate; a partition wall insulation layer disposed on the substrate to cover a first portion of the first electrode; a second electrode disposed on the partition wall insulation layer and including a second portion overlapping the first portion; and a light emitting element disposed on a first side surface of the partition wall insulation layer between the first portion and the second portion and connected to the first electrode and the second electrode, wherein a portion of the first electrode that overlaps the light emitting element does not overlap the second electrode in thickness direction.
2. The pixel of claim 1 , further comprising a partition wall layer disposed between the substrate and the first electrode, wherein the first electrode is disposed on the substrate to cover the partition wall layer.
3. The pixel of claim 1 , wherein a section of the partition wall insulation layer has a rectangular shape.
4. The pixel of claim 1 , wherein the first electrode comprises: a first extension part extending in a first direction; and a plurality of first branch parts branched in a second direction intersecting the first direction from the first extension part, wherein the second electrode comprises: a second extension part extending in the first direction; and at least one second branch part branched in the second direction from the second extension part, and disposed between the first branch parts.
5. The pixel of claim 4 , wherein the first portion comprises: each side of the first branch parts adjacent to one of two sides of the second branch part, the two sides of the second branch part opposite to each other in the first direction; and predetermined portions of the first branch parts adjacent to each side of the first branch parts, wherein the second portion comprises: the two sides of the second branch part; and predetermined portions of the second branch part adjacent to the two sides of the second branch part.
6. The pixel of claim 1 , wherein the partition wall insulation layer comprises an inorganic material.
7. The pixel of claim 1 , wherein the first electrode comprises a reflective electrode.
8. The pixel of claim 7 , wherein the first electrode further comprises a transparent electrode disposed on the reflective electrode.
9. The pixel of claim 1 , wherein a lower end of the light emitting element contacts the first electrode, and wherein a side surface of an upper portion of the light emitting element, which is defined as a predetermined portion of the light emitting element adjacent to an upper end of the light emitting element, contacts the second portion.
10. The pixel of claim 9 , further comprising an insulation layer disposed on the first electrode, the second electrode, and the light emitting element, and having a defined opening exposing the upper portion and the second portion of the light emitting element.
11. The pixel of claim 10 , further comprising a contact electrode disposed in the opening and contacting the upper portion of the light emitting element and the second electrode.
12. The pixel of claim 11 , further comprising a sub insulation layer disposed between the light emitting element and the partition wall insulation layer, between the light emitting element and the second portion, between the insulation layer and a second electrode, and between the insulation layer and a second side surface of the partition wall insulation layer defined as a side surface of the partition wall insulation layer excluding the first side surface.
13. The pixel of claim 1 , wherein the first side surface is inclined surface that makes a predetermined inclination angle with respect to an upper surface of the substrate.
14. A pixel comprising: a substrate; a first electrode disposed on the substrate; a partition wall insulation layer disposed on the substrate to cover a first portion of the first electrode; a second electrode disposed on the partition wall insulation layer and including a second portion overlapping the first portion; and a light emitting element disposed on a first side surface of the partition wall insulation layer between the first portion and the second portion, connected to the first electrode and the second electrode, having a cylindrical shape, and vertically arranged in a direction intersecting an upper surface of the substrate.
15. A display device comprising a plurality of pixels, wherein each of the plurality of pixels comprises: a substrate; a first electrode disposed on the substrate; a partition wall insulation layer disposed on the substrate to cover a first portion of the first electrode; a second electrode disposed on the partition wall insulation layer and including a second portion overlapping the first portion; and a light emitting element disposed on a first side surface of the partition wall insulation layer between the first portion and the second portion and connected to the first electrode and the second electrode, wherein a portion of the first electrode that overlaps the light emitting element does not overlap the second electrode in thickness direction.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 23, 2019
February 23, 2021
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